<template>
  <div>
    <h3>测试用组件</h3>
    <p v-abc>{{ uname }}</p>
  </div>
</template>

<script>
export default {
  props: ["uname"],
  directives: {
    abc: {
      bind(el) {
        el.style.color = "pink";
      },
      update(el) {
        console.log(el.innerHTML); // uname更新之前的值
      },
      componentUpdated(el) {
        console.log(el.innerHTML); // uname更新之后的值
      },
    },
  },
};
</script>

<style>
</style>